Nanomechanical resonators with circular cavities detect electron vortices via magnetic torque-induced vibrations, distinguishing ballistic and hydrodynamic regimes and their temperature crossover.
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cond-mat.mes-hall 2years
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Whirlpools form in GaAs 2D electron liquid and appear as negative four-terminal resistance that scales quantitatively with the Gurzhi length, confirming the hydrodynamic analogy.
citing papers explorer
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Nanomechanical detection of vortices in an electron fluid
Nanomechanical resonators with circular cavities detect electron vortices via magnetic torque-induced vibrations, distinguishing ballistic and hydrodynamic regimes and their temperature crossover.
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Transport Detection of Whirlpools in GaAs Electron Liquid
Whirlpools form in GaAs 2D electron liquid and appear as negative four-terminal resistance that scales quantitatively with the Gurzhi length, confirming the hydrodynamic analogy.